import auth from '@/plugins/auth';
import router, { constantRoutes, dynamicRoutes } from '@/router';
import { getRouters } from '@/api/menu';
import Layout from '@/layout/index';
import ParentView from '@/components/ParentView';
import InnerLink from '@/layout/components/InnerLink';

// 匹配views里面所有的.vue文件
const modules = import.meta.glob('./../../views/**/*.vue');

const usePermissionStore = defineStore(
	'permission',
	{
		state: () => ({
			routes: [],
			addRoutes: [],
			defaultRoutes: [],
			topbarRouters: [],
			sidebarRouters: []
		}),
		actions: {
			setRoutes(routes) {
				this.addRoutes = routes;
				this.routes = constantRoutes.concat(routes);
			},
			setDefaultRoutes(routes) {
				this.defaultRoutes = constantRoutes.concat(routes);
			},
			setTopbarRoutes(routes) {
				this.topbarRouters = routes;
			},
			setSidebarRouters(routes) {
				this.sidebarRouters = routes;
			},
			generateRoutes(roles) {
				return new Promise(resolve => {
					// 向后端请求路由数据
					getRouters().then(res => {
						const sdata = JSON.parse(JSON.stringify(res.data));
						const rdata = JSON.parse(JSON.stringify(res.data));
						const defaultData = JSON.parse(JSON.stringify(res.data));
						const sidebarRoutes = filterAsyncRouter(sdata);
						const rewriteRoutes = filterAsyncRouter(rdata, false, true);
						const defaultRoutes = filterAsyncRouter(defaultData);
						const asyncRoutes = filterDynamicRoutes(dynamicRoutes);
						asyncRoutes.forEach(route => { router.addRoute(route); });
						this.setRoutes(rewriteRoutes);
						this.setSidebarRouters(constantRoutes.concat(sidebarRoutes));
						this.setDefaultRoutes(sidebarRoutes);
						this.setTopbarRoutes(defaultRoutes);
						resolve(rewriteRoutes);
					});
				});
			}
		}
	});

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
	return asyncRouterMap.filter(route => {
		if (type && route.children) {
			route.children = filterChildren(route.children);
		}
		if (route.component) {
			// Layout ParentView 组件特殊处理
			if (route.component === 'Layout') {
				route.component = Layout;
			} else if (route.component === 'ParentView') {
				route.component = ParentView;
			} else if (route.component === 'InnerLink') {
				route.component = InnerLink;
			} else {
				route.component = loadView(route.component);
			}
		}
		if (route.children !== null && route.children && route.children.length) {
			route.children = filterAsyncRouter(route.children, route, type);
		} else {
			delete route['children'];
			delete route['redirect'];
		}
		return true;
	});
}

function filterChildren(childrenMap, lastRouter = false) {
	let children = [];
	childrenMap.forEach((el, index) => {
		if (el.children && el.children.length) {
			if (el.component === 'ParentView' && !lastRouter) {
				el.children.forEach(c => {
					c.path = el.path + '/' + c.path;
					if (c.children && c.children.length) {
						children = children.concat(filterChildren(c.children, c));
						return;
					}
					children.push(c);
				});
				return;
			}
		}
		if (lastRouter) {
			el.path = lastRouter.path + '/' + el.path;
			if (el.children && el.children.length) {
				children = children.concat(filterChildren(el.children, el));
				return;
			}
		}
		children = children.concat(el);
	});
	return children;
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
	const res = [];
	routes.forEach(route => {
		if (route.permissions) {
			if (auth.hasPermiOr(route.permissions)) {
				res.push(route);
			}
		} else if (route.roles) {
			if (auth.hasRoleOr(route.roles)) {
				res.push(route);
			}
		}
	});
	return res;
}

export const loadView = (view) => {
	let res;
	// eslint-disable-next-line guard-for-in
	for (const path in modules) {
		const dir = path.split('views/')[1].split('.vue')[0];
		if (dir === view) {
			res = () => modules[path]();
		}
	}
	return res;
};

export default usePermissionStore;
